Specification for large (vee-throated) haulage rope pulleys for mines and quarries.
NORMA vydaná dňa 5.10.1973
Označenie normy: BS 4878:1973
Dátum vydania normy: 5.10.1973
Počet strán: 36
Približná hmotnosť: 108 g (0.24 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
Requirements for pulleys 600 mm to 2100 mm diameter incorporating rolling bearings in boss; also 600 mm and 1350 mm diameter with bearing bushes in associated pedestals. Specifies pulley classification, particular design criteria, shafts, pedestals, bearings, workmanship, inspection and marking. Includes explanatory appendix, graphs and several illustrations. Status: Confirmed